It is as natural and reasonable for a dependent creature to apply to its Creator for what it needs, as for a child thus to solicit the aid of a parent who is believed to have the disposition and ability to bestow what it needs.
No one was ever saved because his sins were small; no one was ever rejected on account of the greatness of his sins. Where sin abounded, grace shall much more abound.
If you were not a sinful, polluted, helpless, and miserable creature, this Savior would not be suited to you, and you would not be comprehended in his gracious invitations to the children of men.
It will never do to plead sin as an excuse for sin, or to attempt to justify sinful acts by pleading that we have an evil heart. This instead of being a valid apology, is the very ground of our condemnation.